hydrogenchloride; water in 1,2-dichloro-ethane T=25°C; 0.25 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

pyridine hydrochloride in N,N-dimethyl-formamide; toluene 0.166667 h; Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts;